# JSON Compatible Encoder { #json-compatible-encoder }

There are some cases where you might need to convert a data type (like a Pydantic model) to something compatible with JSON (like a `dict`, `list`, etc).

For example, if you need to store it in a database.

For that, **FastAPI** provides a `jsonable_encoder()` function.

## Using the `jsonable_encoder` { #using-the-jsonable-encoder }

                20);
        assertEquals(3, itemList1.size());

        final KuromojiItem kuromojiItem1 = new KuromojiItem(0, "token4",
                "seg4", "reading4", "pos4");
        kuromojiFile.insert(kuromojiItem1);
        final PagingList<KuromojiItem> itemList2 = kuromojiFile.selectList(0,
                20);
        assertEquals(4, itemList2.size());
        assertEquals("token4", itemList2.get(3).getToken());

import org.codelibs.fess.helper.LanguageHelper;
import org.codelibs.fess.helper.SearchLogHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.ingest.IngestFactory;
import org.codelibs.fess.ingest.Ingester;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.unit.UnitFessTestCase;

     *
     * @param o
     *            The object to convert
     * @return The converted {@link Double}
     */
    public static Double toDouble(final Object o) {
        return toDouble(o, null);
    }

    /**
     * Converts to {@link Double}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string

# /---------------------------------------------------------------------------
# sequenceMap: (NotRequired - Default map:{})
# 
# The relation mappings between sequence and table.
# If you don't specify the mappings, you cannot insert a record of the table by sequence. 
# The table names are treated as case insensitive.
# 
# Example:
# map:{
#     ; PURCHASE     = SEQ_PURCHASE
#     ; MEMBER       = SEQ_MEMBER
#     ; MEMBER_LOGIN = SEQ_MEMBER_LOGIN

     * Converts to {@link Byte}.
     *
     * @param o
     *            The object to convert
     * @return The converted {@link Byte}
     */
    public static Byte toByte(final Object o) {
        return toByte(o, null);
    }

    /**
     * Converts to {@link Byte}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string

import jcifs.BaseTest;

/**
 * Test class for Hexdump utility functionality
 */
@DisplayName("Hexdump Utility Tests")
class HexdumpTest extends BaseTest {

    @Test
    @DisplayName("Should convert byte array to hex string")
    void testToHexString() {
        // Given
        byte[] data = { 0x00, 0x0F, (byte) 0xFF, 0x7F, (byte) 0x80 };

        // When
        String result = Hexdump.toHexString(data);

    //                                                                              ======
    public void insert(SearchLog entity) {
        doInsert(entity, null);
    }

    public void insert(SearchLog entity, RequestOptionCall<IndexRequestBuilder> opLambda) {
        entity.asDocMeta().indexOption(opLambda);
        doInsert(entity, null);
    }

    //                                                                              ======
    public void insert(FileConfig entity) {
        doInsert(entity, null);
    }

    public void insert(FileConfig entity, RequestOptionCall<IndexRequestBuilder> opLambda) {
        entity.asDocMeta().indexOption(opLambda);
        doInsert(entity, null);
    }

import java.util.Map;

import org.codelibs.fess.crawler.exception.CrawlerSystemException;

/**
 * Helper class for converting URLs based on a set of predefined rules.
 *
 * <p>This class provides functionality to convert URLs by replacing parts of the URL
 * based on a map of target strings and their corresponding replacements. It allows
 * adding new conversion rules, setting the entire conversion map, and converting
 * URLs using these rules.</p>